[2] Kelly D., Trotter W. T., Јr.: 
Dimension theory for ordered sets. In: Ordered sets, Proc. NATO Adv. Study Inst. Banff, ed. I. Rival, 1981, 171-211. 
MR 0661294[3] Novák V., Vránová L.: 
Dense subsets of ordered sets. Submitted to Math. Bohemica. 
Zbl 0979.06002[4] Szász G.: 
Einführung in die Verbandstheorie. B. G. Teubner Verlagsgesellschaft, Leipzig, 1962. 
MR 0138567[5] Šešelja B., Tepavčević A.: 
On generation of fìnite posets by meet-irreducibles. Diskrete Math. 186 (1998), 269-275. 
MR 1623857 | 
Zbl 0952.06002